What are the causes of pages desindexation?

[JonathanLeplang]

Hello,

I was wondering what can be the causes of pages desindexation by Google? A poor quality pages,...?

Thank you for your answers,

Jonathan

[firstconversion]

There are lots of causes, you need to be more specific or provide urls

Stephen

[gmellak]

Duplicate content issues ... but yes, please provide more information!

[vioma]

Page Speed

[KeriMorgret]

Do please provide some more information. URLs are best. If you can't provide your URL, let us know things like "all of my pages are out of the index" or "a certain number of my pages are now on page 20 instead of page 2", any particular date that this seemed to happen on (so we can see if it's a particular update), and anything you know that may have changed relating to the site (updated code, acquired links, moved site, etc.).

[JonathanLeplang]

I don't have any real case, it was just a question that I was wondering.